package cn.xuchunh.exam;

import java.util.Scanner;

/**
 * Created by XuChunH on 2016/9/10.
 */
public class FinishTask {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNext()) {
            int id1 = scanner.nextInt();
            int id2  = scanner.nextInt();
            if(id1 < 1 || id1 > 1024 || id2 < 1 || id2 > 1024) {
                System.out.println("-1");
            }else {
                int[] array = new int[32];

            }
        }
    }

}
